package com.my.thread.retry.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.ThreadPoolExecutor;

/**
 * @author qinlei
 * @description 线程池配置
 * @date 2021/4/14 11:35
 */
//@Configuration
public class ThreadsPoolsConfig {
    @Bean
    public void initThreadPool(){
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        //配置核心线程数
        executor.setCorePoolSize(1);
        //配置最大线程数
        executor.setMaxPoolSize(20);
        //配置队列大小
        executor.setQueueCapacity(100);
        //配置线程池中的线程的名称前缀
        executor.setThreadNamePrefix("async-service-");
        //线程空闲后的最大存活时间
        executor.setKeepAliveSeconds(10);
        executor.setAllowCoreThreadTimeOut(true);
        // rejection-policy：当pool已经达到max size的时候，如何处理新任务
        // CALLER_RUNS：不在新线程中执行任务，而是有调用者所在的线程来执行
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        //执行初始化
        executor.initialize();
    }
}

